After some neglect, the UK is ramping up investment in its economic infrastructure. A Minister for Infrastructure should now lead the charge, writes Alexander Jan.

George Osborne's 2013 budget, which aims to trim department spending to support infrastructure projects, is encouraging – to a degree. We're surrounded by economic stagnation, and there's general consensus that Britain will not be able to compete internationally without major investment in its economic infrastructure.

The Government's own National Infrastructure Plan notes that:

…many power stations are ageing, road congestion is a growing concern, train punctuality in the UK is worse than in other parts of Europe and in the longer term there will be an airport capacity challenge in the South East of England.

Few readers could disagree with this. And without action it is going to get worse. Energy analysts darkly talk of power outages if the country's generating capacity is not renewed, official forecasts point to big increases in congestion on the road network. As the UK's population grows and economic confidence (and growth) finally return, airports risk once again reaching bursting point. Even Crossrail, the new east to west rail link being carved out under London, will need supplementing with a second scheme and possibly others.

The £3bn which George Osborne recently announced for housing and other infrastructure projects is only the tip of a £400bn iceberg. Power, telecommunications, transport, waste and water are queuing up for this investment. But in an age of austerity and with a long term desire to reduce the size of the state's take of national income, the Government hopes that pension funds, banks and other private investors will stump up more than two thirds of requirements. That would be a remarkable triumph of hope over experience.

The reality is that successive governments have shifted spending away from capital formation. At the same time, private investment in fixed assets has decreased. Taken together, UK investment in property, plant and equipment has lagged behind our competitors since the late 1990s. Amongst them, infrastructure investment averaged 3.5 per cent of GDP over the last decade. The Organisation for Economic Co-operation and Development (OECD) notes that British infrastructure investment was as low as 2.5 per cent of GDP in the same period. More worryingly, analysis by Arup (using data from the Institute for Fiscal Studies) shows that UK public investment has actually fallen in real terms from around £52bn in 2009/10 to an expected £24.6bn in 2012/13. Further declines are forecast to the end of this parliament. This fiscal reality sits uncomfortably with Treasury aspirations.

Few commentators or ministers question the need for increased infrastructure investment. Billions of pounds are looking for infrastructure opportunities, we are told. But somehow they are failing to fully connect. Britain is a preferred destination for international capital. It has tried and tested investment models (think water), a stable legal system, low political risk and lots of infrastructure expertise. All this raises the question as to whether the UK's machinery of government is right. The National Infrastructure Plan itself can provide only so many clues about the Government's overarching investment strategy. Some would argue it reflects the UK's department-centric approach to major project planning. Changing that requires more than a plan.

Government is moving in the direction of improving leadership around infrastructure. Infrastructure UK, a Treasury body, provides some long-term focus on the UK's infrastructure priorities. The Chancellor has announced a set of initiatives to enhance Whitehall's capacity to support private investment across the infrastructure sphere. Guarantees and co-lending and equity investment by the state, are intended to accelerate projects that developers are struggling to finance or where commercial lending appetite falls short. To orchestrate funding and development, the Chancellor has focused the work of the incoming Commercial Secretary to the Treasury on infrastructure development. The Treasury may now appear more "joined up". But are the departments of state?

A Department for Infrastructure should be created. This super ministry would provide more than leadership for spending departments. It could consolidate infrastructure resources and talent spread thinly through the rest of Whitehall. It would give the Prime Minister a mechanism for knocking heads together and ensuring delivery. It could oversee the development of effective frameworks including reforms already in train, to bring in private sector investment to boost growth and competiveness across the countries and city regions of the UK. It could be the agent for delivering a big part of Lord Heseltine's forty billion pound "challenge" fund. It could provide a strong delivery partner for the all-powerful Treasury. With firm delivery objectives that would not be lost in departments' business plans, its minister would be high profile. It would be a potent department of state that senior politicians and civil servants would fight over. There would be a real sense of urgency to get things done and join them up with local government.

This new department of state could be modelled on those found in other Commonwealth countries. Australia integrates infrastructure leadership with its transport ministry. Their Department of Infrastructure and Transport adopts a national strategic function, advising regional governments. It coordinates construction timing and investment decisions under a cabinet-level minister. In Canada which has an enviable track record on securing private sector investment, there is a Minister of Transport, Infrastructure and Communities.

As leading UK economist Dieter Helm has pointed out, Britain is in knots over infrastructure. A Department for Infrastructure might just help slice through them.